@charset "UTF-8";
* {
  margin: 0;
  padding: 0;
}

body {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  /* 渐变背景 */
  background: linear-gradient(200deg, #00c6fb, #66a6ff);
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
nav ul li {
  color: #fff;
  width: 240px;
  height: 60px;
  border: 3px solid #fff;
  border-radius: 10px;
  text-align: center;
  line-height: 60px;
  font-weight: bold;
  cursor: pointer;
  margin: 30px;
  position: relative;
  overflow: hidden;
  z-index: 1;
  transition: 0.5s;
}
nav ul li:hover {
  color: #222;
}
nav ul li:hover span {
  transform: translateY(0) scale(2);
}
nav ul li span {
  position: absolute;
  width: 25%;
  height: 100%;
  background-color: #fff;
  border-radius: 50%;
  transform: translateY(150%);
  transition: 0.5s;
  z-index: -1;
}
nav ul li span:nth-child(1) {
  left: 0%;
  transition-delay: 0s;
}
nav ul li span:nth-child(2) {
  left: 25%;
  transition-delay: 0.1s;
}
nav ul li span:nth-child(3) {
  left: 50%;
  transition-delay: 0.2s;
}
nav ul li span:nth-child(4) {
  left: 75%;
  transition-delay: 0.3s;
}/*# sourceMappingURL=index.css.map */